The Samsung Handsfree Adaptor 2.5mm allows you to use any universal 2.5mm handsfree headset with your proprietary handsfree port.table.compat th, td {padding-top:10px;vertical-align:top;} table.compat td {font-size:10pt;text-align:justify;} table.compat th {font-size:12pt;font-weight:normal;text-align:justify;}Supported ModelsSamsungSamsung A137, Samsung A167, Samsung A237, Samsung A257, Samsung A